Why not one of each? I like both styles too. :)

Oh i didn’t even think of that!

If they are going to be replacing the current white chairs, why not introduce some color. I would prefer a matching pair like you have now that are totally upholstered. Pick a color and then get some pillows with a pattern of the same color or get chairs with a pattern and solid pillows for couch that pick up the same colorway. I don't think you want a brown leather next to the wood piece and TV.

While I really like the leather chairs, I wonder if you're going to unbalance the room with them. More specifically, the room currently has the light colored sectional and across it has the dark wood cabinet with the light colored chairs flanking. These chairs provide visual connection to the light sectional. If you do leather chairs, they won't have a visual connection to the sectional and at least to me, it seems like it creates imbalance in the room because you'll have pale fabric on one side and dark leather + dark wood on the other without anything connecting the two.

that is a fantastic point and i didn’t even think of the unbalance of light/dark. I did think of adding some color…thought safer bet was doing so with pillows/throws. I do love navy. Maybe Navy ones? I thought going leather/neutral would be safer bet if i change my mind color wise down the road with other accent decor etc, but you all have brought up great points-thank you!!!